We are just finishing the time of year in which we can safely have our animal herd out in the vineyard. With the continued progression of budbreak, even our latest-sprouting grapes are starting to push buds. Leaves are not far behind. So, we've moved the animals to two vine-free sections of the property: the new parcel on the other side of Tablas Creek, and a smaller area in the middle of the vineyard where we pulled out some struggling Syrah and Roussanne vines, and which we are letting lie fallow this summer.
Still, it's not hard to see the impact of the animals on the blocks in which they spent time, particularly at the fence lines which mark the dividers between grazed and ungrazed areas. I snapped a photo of one of these borders yesterday, halfway up the hill of Mourvedre that's behind the winery:
Five days ago, the entire hillside looked like the prairie. Now, the bottom dozen rows (beginning at the middle of the frame above) look like they've been neatly mowed. It took the animals just two days to graze their enclosure down to a few inches. They spread manure throughout the block. And we didn't have to use an ounce of fuel or a single tractor pass to accomplish either goal.
This is the second time this winter that this block has been grazed by our flock; we moved them down the hillside in January. So, even the tall grass on the uphill side of the fence line is regrowth after an initial grazing, fueled in part by the fertilizer left behind on the animals' first pass.
It is this efficiency -- that we can use natural processes instead of artificial ones -- that makes Biodynamics so appealing. We're creating a more complete, more resilient ecosystem by building biodiversity, and saving ourself the costs (and side-effects) of having to buy (and spread) fertilizer, and of having to drive through the vineyard (and compact the soil with a tractor) mowing. The other benefits -- better water retention, no erosion, more topsoil, and the occasional lamb chop -- just tilt the cost/benefit calculation further in the right direction.
I drive by a few vineyards each day on my way into work whose soils look dead. Between the herbicides they use to keep weed growth down and the soil compaction created by the tractor work, even this winter's ample rainfall couldn't make grasses grow. The difference between soils like that and what you see above couldn't be plainer. Do you think this difference will impact the grapes that grow there, and the wines that result? You bet it will.